Normal Lab Values for Nursing

Sodium (Na)

135-145

Potassium (K)

3.3-5.0

Chloride (Cl)

95-110

Carbon dioxide (serum) (CO2)

24-32

Blood urea nitrogen (BUN)

8-22

Creatinine (Creat)

0.5-1.3

Blood glucose

70-110

Phosphorus

3.0-4.5

Calcium (Ca)

8.6-10.5

Magnesium (Mg)

1.2-2.0

Cholesterol

<200

Triglycerides

35-160

Total proteins

6.3-8.3

Amylase

56-190

Lipase

0-110

Troponin I

<0.3 OR <3.1 mcg/L

Myoglobin

0-85

Albumin

3.5-5.1

Alk. Phos

20-180

GGT (high = liver disease or chronic alcohol abuse)

0-65

Total bilirubin

0.3-1.3

CPK total

0-250 OR 12-80 for males and 10-70 for females

CPK-MB

<7.5, <3% of CPK Total

LDH

90-200

AST

8-42

ALT

10-60

Lactate

0.3-2.6

WBC

4.5-11.0

RBC

4.5-5.3

Hgb

13-16

Hct

37-49

Platelets (PLT)

130-400

PTT

23-33.5

PT

11-12.5

INR

<1.6

Ionized Calcium

1.2-1.32

PO2

80-100

PCO2

35-45

O2 Sat

90-100

pH

7.35-7.45

HCO3

22-28

Digoxin therapeutic level

0.8-2.0

Troponin T

<0.2 mcg/L

Ammonia

9.5-49 mcg/L OR 7-35 mcmol/L

GFR

90-125 mL/min is normal, <60 is critical

Serum Osmolality

280-295

Urine Specific Gravity

1.005-1.030 (around 1.010)

Unconjugated bilirubin

0.2-0.8

Conjugated bilirubin

0.1-0.3

Cerebral perfusion pressure

60-80 mm Hg

<50 = ischemia

<40 = death of neurons

>180 = hyperemia

CPP = MAP - ICP

Intracranial pressure

<15 cm H2O

Pulmonary Wedge Capillary Pressure

4-12

Central Venous Pressure

2-8 cm H2O OR 2-6 mm Hg

Cardiac Output

4-8 L

Ejection Fraction

60%

LDL cholesterol

<100

HDL cholesterol

>35, 1:3 ratio with total cholesterol

Pulmonary Artery Pressure

25/10

Systemic Vascular Resistance

800-1200 dynes

Cardiac Index

2.4-4.0